Defective-pick-extracting means



April 22 1924. 1,491,084

R. CROMPTON DEFECTIVE PICK EXTRACTING MEANS Filed 0613. 10 1922 4 Sheets-Sh et 1 lave-2430i": Randolph 71111130311 A ril 22 1924. 1,491,084

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Patented Apr. .22, 1924.

UNITED STATES RANDOLPH'CROMPT'QN, OF WORCESTER, MKSSACH'USETTS.

DEFECTIVE-PIGK-EXTRACTING MEANS.

Application filed October 10, 1922. Serial No. 593,548;

To all whom it may concern: I

Be it known that I, RANDOLPH CRoMrToN, acitizen of the United States, and a resident of Worcester, in the county of Worcester and State of Massachusetts, have invented an lu'iprovement in Defective-Pick-Extracting Means, of which the following description,in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to means for extracting defective picks from the loom shed, such, for example, as broken, partial or exhausted picks.

In order that the principle of the invention may be readily understood, I have disclosed a single embodiment thereof in the accompanying drawings, wherein Fig. 1 is a plan view of a part of the left hand side of the loom and representing my invention applied thereto;

Fig. 2 is a similar view of the right end of the loom;

Fig. 3 is a vertical longitudinal section taken through the lay, the reed and the breast beam and representing my invention as applied thereto;

Fig. 4 is a front elevation of a part of the loom at the left hand side and representing my invention as applied thereto; and

Figs. 5, 6 and 7 are perspective views showing several parts of the defective pick extractor.

An important object of the invention is to extract a broken, partial or exhausted pick from the shed particularly in an automatic loom, during the process of weaving and while the loom is running, by a simple and effective mechanism.

It has heretofore been proposed to extract the incomplete pick from the shed of a loom while running, by cutting sections of the incomplete pick and withdrawing such sections perpendicularly tothe plane of the warp and through the same. It has also been proposed to mount suction devices upon swinging uprights adapted to be struck by cams upon the lay, said suction devices being normally in the shed and being withdrawn by the cams before beat-up.

In accordance'with my invention I provide a defective pick extractor of the suction type preferably normally stationary, and mounted at or near the selvage of the goods in such manner as to cooperate with a temple of any suitable type, but preferably of the thread cutting type, for severing the end of a partial pick after extraction between the nozzle of the suction device and the selvage of the goods.

It is important that the extracted pick be cut close to the selvage. This I preferably do by the cutter of the temple, although my invention is not limited to the use of a temple cutter, as other cutters may be used in certain embodiments of my invention.

A grave defect of previous suction pick extractors has been the fact that the extracted pick is cut a considerable distance from the selvage. This fault is particularly serious in a loom using a plurality of shuttles carrying different colors of filling, as such ends extending from the salvage are very noticeable if picked into the shed, destroying as they do the effect of the pattern being woven for a considerable distance into the body of the cloth.

Obviously my invention may be variously carried out provided the suction device is mounted at or near the fell of the cloth close to the selvage and free from interference from the action of the lay, and provided cutters for severing the filling close to the selvage edge be present.

Referring more particularly to the drawings wherein is disclosed one embodiment only of my invention, the framing of the loom is indicated in partat 1, the breast beam at 2, the lay at 3, and thetemples at the opposite sides of the loom at 4, 5. Said temples may be of any approved type, but desirably they are equipped with means for cutting the threads close to the selvage. A usual filling fork is indicated at 6 in Fig. 1, it being preferably arranged to call a change of bobbins for replenishment upon the detection of the absence of filling. If upon three successive double picks of the running shuttle the absence of'filling is detected, the loom is stopped in any usual or Well known manner not herein necessary to disclose.

Secured to the upper face of the breast beam 2 adjacent to each of the temples 4i, 5 is a slide stand 7 receiving a slide 8 adapted for horizontal movement upon the upper face of the breast beam and having a cross head 9 its inner or rearward extremity. A projection 10 upon the slide stand 7 enters a slot 11 in the slide 8 and serves as an abutment for the compression spring 12, the other end of said spring bearing against the rearward or inner end 13 of the slot 11 servinn to keep the slide 8 in the position shown in Fig. 1, that is, as far toward the lay 3 as it can go before being stopped by the forward end'of the slot- 11 contacting with the projection or lug 10. If in the running of the loom the shuttle becomes trapped between the reed and the mechanism carried on the slide 8, the slide is pressed forward, compressing the spring 12 and no damage results.

Mounted upon the cross head S) is a sliding head or member 15 adapted to be slid to and fro by a lever 16 pivoted at 17 upon the slide 8. The said lever 16 is provided with a stud 17 to which is connected'a link 18 extending in a preferably horizontal direction and con-v nected to any suitable mechanism 19 of the loom to impart to and fro movement constantly to said link. 'Desirably said mechanism 19 is a lever operated by a suitable cam shaft provided for that purpose and so timed as to impart the described constant to and fro movement to the link.

In this manner the head 15 is moved toward the centre of the loom immediately after the shuttle has been picked into the shed from the said side of the loom, namely, the right hand side viewing Fig. 1, it. being obvious that themechanism is or may be duplicated at the other side of the loom where similar reference characters are employed to denote the same part. Said lever 16 acts to hold the head 15 in its innermost position until just before the harnesses cross to form the next shed, and then return said head to the normal or inoperative position shown in both Figs. 1 and 2.

I preferably secure the pick extractor to the under side of the slide head 15. The said pick extractor is shown as a tube 20 desirably of a duck bill shape and having an orifice at 21 for the entrance of the defective pick. The said tube 20 is connected by means of a flexible tube 22 to a suction intake or vacuum tank not shown, and which causes an inrush of air through the orifice 21 and the tube 22 as indicated by the arrows in Fig. 3. The said duck bill 20 enters the shed as the sliding head 15 moves toward the centre of the loom and the orifice 21 is brought into juxtaposition with the filling which stretches across the web of the cloth angularly from the fell the selvage on the side under consideration. If the filling is intact, it is held by friction in the shuttle and by its own weight, but if the filling be broken or otherwise defective, it will be sucked into the orifice in the duck bill and down through the tube 22. The end of said defective filling which is attached to the selvage will be subsequently severed by the cutter on the temple at that side.

As the duck bill 20 may be too delicate to withstand the shock of being constantly struck by the shuttle with the consequent compression of the spring 12 in case of accident during weaving, I may and desirably do provide a suitable buffer which is here shown as a lug or nose 23 constituting; an extension of the sliding head 15. The said buffer may have the same shape in plan as the duck bill 20.

The broken and severed ends of the tilling drawn down the tube 22 are deposited in the container provided therefor, which may serve either a single loom or a number of looms as desired. It will be observed that r the suction devices move into and out of the shed in substantial parallelism with the face of the reed.

I am aware that it has been proposed to mount defective pick extracting devices upon the loom lay, but so far as I am informed they are not pneumatic devices but are mechanical devices of complicated construction and are harsh in action, and they fail to withstand the speed required in commercial weaving.

I mount the suction device in such position that it may cooperate with the thread cutting temple at that side, and so that the end of the defective pick may be severed close to the selvage and close to the fell of the cloth. Therefore each suction device cooperates with the thread cutting temple at that side of the loom to secure the described result. Desirably both the temple and the suction device at the same side are carried by the breast beam and said parts are in proximity to or adjacent each other, though obviously the position of each suction device may be varied so long: as the principles of my invention are practised.

Having thus described one illustrative embodiment of my invention, I desire it to be understood that although specific terms are employed they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims.

Claims:

1. In a loom, a lay adapted to receive a shuttle, a pair of thread cutting temples at opposite sides of the loom to hold the goods being woven, a pair of suction devices carried by the breast beam of the loom at the two openings of the shed in immediate proximity to said temples, and means periodically to slide said suction devices in substantial parallelism with the face of the reed into and out of the shed and so as to cause the defective picks to be severed by the temples. H

2. In a loom, alay adapted to receive a shuttle, a pairof thread cutting temples at opposite'sides of the loom to hold the goods being woven, a pair of suction devices respectively at the two openings of the shed, said suction devices being mounted independently of the lay in proximity to said temples, and means independent of the lay to causesaid suction devices to be moved periodically into and out of the shed opening so as to cause the defective picks to be severed close to the selvages by the said temples.

3. In a loom, a lay adapted to receive a shuttle, a pair of thread cutting temples at opposite sides of the loom to hold the goods being woven, a pair of suction devices for defective picks respectively at the two openings of the shed adjacent said temples, means to support said suction devices independently of the lay, means independent of the lay to cause said suction devices to be moved periodically longitudinally into and out of the openings of the shed and so as to cause thedefective picks tobe severedby said temples.

4. In a loom, a lay adapted toreceive a shuttle, a pair of thread cutting temples at opposite sides of the loom to hold the goods being woven, a pair of suction devices respectively at the two openings of the shed, said suction devices being mounted at the upper side of the breast beam adjacent said temples, and means to cause said suction devices to be moved into and out of the openings of the shed.

5. In a loom, a lay adapted to receive a shuttle, a pair of thread cuttingtemples at opposite sidesof the loom to hold the goods being woven, a pair of suction devices respectively at the two openings of the shed, said suction devices being supported by the upper face of the breast beam in proximity to said temples, and means to cause said suction devices to be moved into and out of the openings of the shed.

6. In a loom, a lay adapted to receive a shuttle, a pair of thread cutting temples at opposite sides of the loom to hold the goods being woven, a pair of suction devices respectively at the two openings of the shed, said suction devices being mounted at the temple areas of the breast beam, and means independent of the lay to cause said suction devices to be moved into and out of the openings of the shed.

7. In a loom, a lay adapted to receive a shuttle, a pair of temples at opposite sides of the loom to hold the goods being woven, a pair of suction devices respectively at the two. openings of the shed, said suction devices being supported adjacent said temples respectively, means periodically to operate said suction devices, and means to. sever the partial pick at either side of the goods close to the selvage.

8. In a loom, a lay adapted to receivea shuttle, a pair of temples at opposite sides of the lay to hold the goods being woven, a pairof suction devices respectively at the two openings of the shed, said suction devices beingsupported upon the breast beam in proximity to the said temples respectively, means to move said suction devices into and outof the shed, and means to sever a partial pick at either side of the'goods close to the selvage.

9. In a loom, a lay adapted to receive a shuttle, a pair of thread cutting temples at opposite sides of the loom to hold the goods being woven, a pair of suction devices carried by the breast beam at the two openings of the shed in immediate proximity to said temples, and means periodically to slide said suction devices into and out of the shed and so as to cause the defective picks to be severed by said temples close to the selvages.

10. In a loom, a lay adapted to receive a shuttle, a pair of thread cutting temples at opposite sides of the loom to hold the goods being woven, a pair of suction devices mounted upon astationary supportat the two openings of the shed adjacent said temples, and means periodically to move said suction devices upon the stationary sup port into and out of the shed openings and so as to cause the defectivepicks to be severed close to the selvages by the said temples.

11. In a 100111, a lay adapted to receive a shuttle, a pair of thread cuttings temples at opposite sides of the loom to hold the goods being woven, a pair of suction devices mounted upon a fixed support respectively at the two openings in the shed in proximity to the said temples, means periodically to move said suction devices in substantial parallelism with the face of the reed into and out of the shed openings, and so as to cause the defective picks to be severed close to the selvages by said temples.

12. In a loom, a lay adapted to receive a shuttle, a pair of thread cutting temples mounted upon the breast beam at opposite sides of the loom to hold the goods being woven, a pair of suction devices also supported by said breast beam at the two openings of the shed in proximity to said temples, said suction devices being movable lengthwise the breast beam and also transversely thereto, whereby said devices are periodically moved into and out of the shed openings so as to cause the defective picks to be severed close to the selvages by the said temples.

13. In a 100m, a lay adapted to receive a shuttle, Weft cutting means at opposite sides of the 100m adjacent the selvages, a pair of suction devices mounted upon a stationary support at the two openings in the shed adjacent respectively said cutting means, and

means periodically to move said suction de- 10 vices upon said stationary support into and out of the shed openings and so as to cause the defective pick to be severed close to the selvages by the said cutting means.

In testimony whereof, I have signed, my 5 name to this specification.

RANDOLPH oRoMPTo'N. 

